Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 21C0284-1 found under Leaf Butt Hinge by Fleet Readiness Center East Div Department Of Navy. The National Stock Number assigned to this part is 5340015534204, and the Federal Supply Class is 5340 Hardware Commercial. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 21C0284-1.